Signal circuit cutout



Filed Aug. 11, 1948 Kim/ 1 dffaamz i atented Oct. 23,

Charles, Slocum, Adrian, Sprti "Faraday Ind, Adria tion of Ohio assignqr; to n, Mich., a corpora- Application August 11, 1948,'Serial'No. 43,733 2 Claims. (01. 167+?) This invention relates to a cut-out or breaker control in supplemental relation as apart from introduction in any way whatsoever in the cir- 'p This invention has utility when incorporated with a signal device, primarily as having an armature functioning" therewith, as for anaudible unit, and herein er'iibodie'clin association with a bell or'gong.

Referring to the drawings:

Fig. 1 is a front elevation, with parts broken away, of an embodiment of the invention in an electric bell type of calling means;

Fig. 2 is a side elevation, from the right of Fig. 1, a portion of the cover being removed; and

Fig. 3 i an enlarged View on the line III-III, Fig. 1, a portion being in section, but with the cut-out shifted.

Upon a base I, catches 2 detachably mount a lid or cover 3 for electromagnet coils 4, 5, herein shown at an angle of 30 as to the generally rectangular base I. From the base I there extends centrally from one side an arm 6 mounting a hell I. In the respective coils 4, 5, are fixed pole magnets 8. A conductor leaf spring 9 provides a yieldable mounting for an armature II]. An arm II from the armature I terminally carries a knocker or lug I2 for striking inside the bell I near its open side rim I3 parallel to and spaced slightly away from the plane of the base I outer side or face on which are mounted the coils 4, 5.

The electric circuit An insulation fiber plate I4 on the base I, carries a terminal I5 from which a conductor line I6 extend to energy source, herein shown as a battery IT. From the battery II there is a conductor line I8 to a normal or emergency control, as a thermostat I9 to close a switch 28, thereby completing the electric circuit thru a conductor line 2| to a ground terminal 22 at the base I.

At the terminal I5 is a conductor connection 23 to the coil 4 in series by a connection 24 with the coil 5. A conductor connection 25 from the coil 5 is to an extension 26 having an upright arm 21 carrying at its upper or outer end a contact 28. The electrical circuit from the line I6 thru the terminal I5 to the contact 28 is insulated from the base I.

The conductor spring leaf 9 is conductively connected to the base I, and accordingly in circuit with the ground terminal 22. The spring leaf 9 in its extent along the armature 9 has an ofiset or spring tongue 29, at its end carrying a H 2 contact 30 normally yieldably in contact with the contact 28. This means that as the switch 20 be closed, the coils 4, 5, are energized to draw the armature I I! to strike the poles 8, thereby separating the contact 30 from the contact 23. The circuit to the coils 4, 5, is thus automatically opened or broken. However, in this instant ofpulling the armature It toward the poles 8, the arm II has its striker end I2 hammer the bell I. The opening of the circuit at the points or contacts 28, 39, is only momentary and the cycle is repeated for a continuation of the ringing of the bell 1.

The cut-out In the base I anchored by an eyelet 3I i a lever having a handle 32. Away from the arm 32 and beyond the eyelet 3I, the lever has a short arm 33 with an upwardly extending portion or offset 34. Desirably this lever is of insulation material. At the limit position therefor, as frictionally held by the eyelet 3!, the lever 32, 33, 34 (Fig. 1) leaves the bell circuit entirely within the control of the switch 28. By swinging the handle 32 away from its limit position toward the terminal 22, the offset 34 pushes the contact 39 clear of the contact 28, thereby nullifying any closing action at the switch 20. This is a manual cutout. By locating the coils 4, 5, at the angle, full dimension relation therefor as to the base I is retained, with clearance for the cut-out lever 32, 33, 34, mounting by the eyelet 3 I.

While the suggestion has been made herein that the lever 32, 33, 34, may be of insulation, in the particular circuit set-up as herein disclosed, such is immaterial. In fact, with this lever 32, 33, 34, of metal thruout and by the metal eyelet 3I anchored with the base I connected as a ground side for the circuit, at all times the lever is out of circuit. The complementary contact 23 is the one which is insulated from the base I, and as the contact 33 be moved clear thereof, there i no flow of current in the circuit.

The 30 from vertical, or away from hori zontal for the general diagonal direction to be taken by the armature I0, leaves a clearance region cornerwise therefrom of ample area for placing the cut-out lever 32, 33, 34.

What is claimed and it is desired to secure by Letters Patent is:

1. For an electric circuit, a breaker in said circuit including a mounting therefor maintaining the breaker as idle free for normal operation, and a base for the breaker, a cut-out on the base independent of any in-circuit relation to the 3 breaker, said cut-out being movable relatively to the breaker and as to the circuit, and, as so moved, effecting an opening of the circuit to nullify breaker operation in thereby maintaining the circuit opened, said cut-out comprising a fulcrum in the base and a lever having arms in a plane extending from the fulcrum, one of said arms being ofiset one way from the plane to overhang an edge of the base and provide a handle for operating the cut-out, and the other arm being terminally offset the other way from the plane into the range of the breaker and as there shiftable from the handle operation to effect in one direction breaker circuit opening and in the other direction breaker circuit clos- 2. For an electric bell base, a pair of parallel electric coil thereon, a pole in each coil, a leaf spring conductively anchored to the base and extending toward the poles, an armature mounted on the spring to extend between and in proximity to the poles, but normally spaced therefrom and held clear of the base by the action of said spring mounting therefor, an in-circuit contact from the base carried by the spring, a relatively fixed complementary contact in circuit from the coils providing with the in-circuit contact a normally closed first switch, a circuit from the base and coils, and a control additional switch in said circuit closeable for energizing the coils and thereby normally causing the first switch to operate as a breaker to ring the bell, a lever electrically and magnetically independent of said circuit, said lever being in a plane from an eyelet mounting in the base adjacent the coil and normally clear of the armature and its contact, and said lever having an arm with an integral free end ofiset one way from the plane, said lever having another arm extending beyond the base to provide an operating handle for the offset to be responsive to swinging of the lever to thrust the in-circuit contact away from the complementary contact, thereby, independent of any in-circuit relation, rendering the control additional switch closing ineffective to operate the bell.

- CHARLES W. SLOCUM.

REFERENCES CITED 7' The following references are of record in the file of this patent:

UNITED STATES PATENTS Ellery Sept. 9, 1941 

